Volumes (Pyramids, Spheres [Half Spheres] and Cones)

What is the formula of finding a sphere?

• $\frac{4}{3}\times\pi r^3$

• $\frac{1}{3}\times height\times\pi r^2$

• $length\times width\times height$

• $\frac{1}{3}\times base\times height$

The volume of this sphere is (a)    $cm^3$ . Write your answer in TWO decimal digits. 

 $\pi=3.14$  

What is the total volume of this pyramid?

• $190cm^3$

• $191cm^3$

• $192cm^3$

• $193cm^3$

If a pyramid height was 9 cm, and the length and width are the same length. They both are 2 cm. Find the volume of this pyramid. The volume of this pyramid is (a)     $cm^3$ .

A pyramid length is 4 cm, width is 3 cm and the height is v. The total volume of this pyramid is 36 cm³. Find the value of v.

• 8 cm

• 9 cm

• 10 cm
  

• 11 cm

Which of these 3D shape formula has used  $\frac{1}{3}$ ?

• Sphere

• Cone

• Pyramid

• Cube

Find the volume of this cone.
Conditions:
1.Write your answer in TWO decimal digits.
2. $\pi=3.14$  
The volume of this cone is (a)    $cm^3$ .

 Find the total volume of this sphere.  
Conditions:
1.π=3.14
2.Write your answer in TWO decimal digits.
$$11
\pi=3.14

•  $903.32cm^3$  

•  $904.32cm^3$  

•  $903.31cm^3$  

•  $904.33cm^3$  

The picture shows a toy pyramid. The height and the width of it were 5 cm. The height was v. Given that the volume of it was $$
75cm^3 , find the value of v. The value of v was (a)   cm.

Find the volume of this half sphere.
Conditions:
1.Write your answer in TWO decimal digits.
2. $$
\pi=3.π = 3.14     


(a)